| Nd2Ti2O7-BaTiO3-TiO2系陶瓷的相结构和介电性能研究 |
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| 引用本文： | 肖谧,王洪儒,贺宏朝. Nd2Ti2O7-BaTiO3-TiO2系陶瓷的相结构和介电性能研究[J]. 硅酸盐学报, 1998, 26(5): 598-603 |
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| 作者姓名： | 肖谧 王洪儒 贺宏朝 |
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| 作者单位： | 天津大学电子工程系 |
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| 基金项目： | 中国科学院资助项目，59782003， |
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| 摘 要： | 对Ｎｄ２Ｔｉ２Ｏ７－ＢａＴｉＯ３－ＴｉＯ２系陶瓷的相结构和介电性能进行了研究。研究结果表明：少量Ｎｄ２Ｔｉ２Ｏ７（ＮＴ）掺杂到，ＢａＴｉＯ３（ＢＴ）中后形成铁电固溶体材料，其Ｃｕｒｉｅ温度随ＮＴ含量的增加向负温方向移动，同时，材料的晶粒尺寸不断增大；在ＮＴ－ＢＴ－ＴｉＯ２三元系统中，当ＢＴ含量低于６０％（质量分数）时，调整三者的配比，可使烧结后生成的ＢａＮｄ２Ｔｉ５Ｏ１４，Ｂａ２Ｔｉ９Ｏ２０，Ｎｄ
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| 关 键 词： | 钛酸钕 钛酸钡 二氧化钛 陶瓷 相结构 介电性 |
STUDY ON PHASE STRUCTURE AND DIELECTRIC PROPERTIES OF CERAMICS IN Nd2Ti2O7-BaTiO3-TiO2 SYSTEM |
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| Xiao Mi,Wang Hongru,He Hongzhao. STUDY ON PHASE STRUCTURE AND DIELECTRIC PROPERTIES OF CERAMICS IN Nd2Ti2O7-BaTiO3-TiO2 SYSTEM[J]. Journal of The Chinese Ceramic Society, 1998, 26(5): 598-603 |
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| Authors: | Xiao Mi Wang Hongru He Hongzhao |
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| Abstract: | The phase structure and dielectric properties of ceramics in Nd 2Ti 2O 7-BaTiO 3-TiO 2 system were investigated in this paper. The results show that ferroelectric solid solution is formed when a small amount of Nd 2Ti 2O 7(NT) is doped into BaTiO 3(BT), the Curie temperature of which will shift to negative as the amount of NT is increased, and the crystal size will increase as well. In NT-BT-TiO 2 system, if the content of BT is less than 60%(in mass), when the ratio in relative to each other is adjusted, the amount of formed BaNd 2Ti 5O 14 ,Ba 2Ti 9O 20 ,Nd 2Ti 2O 7, and TiO 2 will change accordingly, and a series of ceramics with different dielectric constants and temperature coefficients will be formed. |
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| Keywords: | neodymium titanate barium titanate titanium oxide ceramics phase structure dielectric property |
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